[Android Apps and Games] Chainfire:
Download

You can download the app on the Play Store for free:

Download 500 Firepaper

DO NOT REDISTRIBUTE

In other words, please don't post the APK elsewhere, rather just link to this thread.

Changelogs

2018.05.29 - v3.00 - RELEASE NOTES

- Switch out 500px API for Reddit's /r/EarthPorn

2017.09.15 - v2.80 - RELEASE NOTES

- New API keys

- Grand algorithm reworking:

--- API call rate limiting

--- Daily quotas

--- Cache period extension

--- Display order randomization

- Fixed bug where images would auto-change for a few seconds

2015.12.03 - v2.70 - IMPORTANT NOTICE

- Broke up with 500px

2015.03.16 - v2.65

- Fix low resolution display (use 'clear cache' feature or wait a few days for it to clear up)

- Fix for Muzei art source which would stop working after a while

- Fix black screen on some devices during wallpaper startup

2015.02.25 - v2.60

- Significantly reduce the number of requests to 500px API servers (more speed, less bandwidth)

2015.02.24 - v2.59

- Fix issue with pinned images not sticking

- Further cache tuning

2015.02.22 - v2.57

- Reduce default cache size

- Fix removed image (at 500px) triggering a download loop

- Fix fallback image download failure

2015.02.15 - v2.55

- Add value display to slider dialogs

- Add orientation bias setting

- Add min and max cache size settings

- Add cache settings category (moved some settings around)

- Improved memory utilization in history browser

- Improved cache clearing behavior

2015.02.14 - v2.50

- (C) 2015

- Adjust wallpaper selection icon on Lollipop

- Fix blurry images due to 500px API changes. Use "clear cache" option to force fix.

2014.12.22 - v2.45

- Exit Daydream on unused key press

- Added button to share title, author, and link from history browser

- Fix possible loop issue during image change

- Fix pinned images not staying pinned when refresh set to 'every screen off' or 'every home display'

2014.12.02 - v2.42

- Icon replacements

2014.11.26 - v2.40

- Hardware acceleration now default

- Fix Pro not showing on secondary devices

- Basic L theming (more and new icons coming soon)

- TV compatibility

2014.10.21 - v2.32

- Fix some black screen issues

2014.10.19 - v2.30

- Android-TV related changes

- Fixed high CPU due to network failure

2014.05.10 - v2.27

- Fixed crash on close

- Fixed occsasional rapid succession refresh

2014.05.09 - v2.26

- Crash fix on 4.0 and 4.1 devices (ditched DexGuard)

2014.05.09 - v2.25

- Hardware acceleration: reduce flicker

- Hardware acceleration: fixed an auto-refresh issue

- Hardware acceleration: double tap to deblur

- Muzei: fixed an auto-refresh issue

- Added wakelock timeouts (just in case)

- Adjusted rotation refresh behavior

- Separated all components into their own processes for better memory management

- Blur setting no longer affects daydream

- Pinned image no longer affects daydream or Muzei

- Reworked parallax scrolling

- Reduced background resource usage

- Touch detection adjusted again

2014.05.03 - v2.06

- Fixed crash on launch (DexGuard again!)

2014.05.03 - v2.05

- History Browser no longer automatically closes when selecting it from recent apps

- Fixed some premature refresh issues

- Fixed refreshing of unseen images

- Clear cache now also removes orphaned files

- About a dozen reported minor crashes fixed

- Hardware acceleration: transition effect changed

- Three-finger tap detection adjusted

2014.04.29 - v2.00 - RELEASE NOTES

- Triple tapping the wallpaper now opens the history browser

- Complete reworking of the history browser

--- Twopane layout now vertically oriented in portrait mode

--- During navigation position is remembered (singlepane)

--- Improved thumb loading

--- Implement auto-release memory cache

--- Use disk cache if image available

--- Load shown image first

--- Swipe to navigate

--- Animations

--- Margins

- Revamped cache algorithms, spreading throughout the day

- Clear history moved to main screen

- Garbage bin icon in history browser now deletes only current image

- Added experimental hardware acceleration (some caveats)

- Reworked touch detection code

- Improved LWP setup wizard (skips a screen if possible)

- Allow user to set default image (shown when no other image can be displayed)

- (Pro) Pin wallpaper to the screen for X days (or manually progressed, if sooner) (LWP only, no daydream or Muzei)

2014.02.26 - v1.70

- Fixed "Transportation" category: un- and re-select it in config to fix

- Added option to clear history

- Fix a number of potential crashes that could cause black screen

- Batch together incremental image downloads

- Adjusted image download strategy if not limited to Wi-Fi. Should reduce data usage in that case.

2014.02.13 - v1.60 - RELEASE NOTES

- Added Muzei support

- Dream: hide navigation bar pre-KitKat

2013.12.15 - v1.53

- Fixed (one) possible issue where image will not refresh

- Fixed issue with In App Purchase detection (again)

2013.12.14 - v1.51

- Fixed some categories not working (if you have this problem, use "Clear cache" option)

- Fixed issue with In App Purchase detection

- Changed nag frequency to at most once a day

2013.12.13 - v1.50

- Added blur option

- Added oversaturate option

- Added history browser

- Added setup wizard

- Added donation

- Fixed another black bar issue

- Fixed some spelling errors

- Current image now survives restarts (rotation on some launchers, reboot)

- Parallax disabled by default

2013.11.20 - v1.20

- Fix possible crash at normal daydream exit

- Fix freeze at power cord pull while daydreaming

- Changed triple tap algorithm - no longer pops up during fast swiping

- Triple tap to open 500px is now optional

- Loading a new image on rotation is now optional

- Added option to refresh image each time the home screen is shown

2013.11.18 - v1.12

- Fix crash on startup - if still happening: Settings->Apps->500 Firepaper->Clear data

2013.11.18 - v1.11

- NOTE: UPDATING WILL CLEAR CACHE

- Triple tap opens 500px

- Added NSFW switch

- Longer refresh intervals for LWP

- Fixed a scaling bug that could cause horrible pixelation

- Change to interval settings now active immediately instead of at next image

- Fixed miscalculation that could cause black bars

2013.11.12 - v1.04

- Evermore crash fixes

- Optimized away some redundant drawing operations

- Fixed some rendering issues

- More aggressive memory management (reduce memory use when device low on memory)

2013.11.12 - v1.03

- Fixed some more crashes

- Fixed some spelling errors

- Added option to disable parallax effect

2013.11.11 - v1.02

- Fixed some crashes

- Fixed some issues with daydream on S4/Note3

2013.11.11 - v1.0

- Initial release